Boiler-tube tool.



C. G. BAKER.

BOILER TUBE TOOL.

APPLICATION FILED APR. 3, 1914.

1 1 1 6,205. Patented Nov. 3, 1914.

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THE NORRIS FErERs c0.. PHOI'OLI "10.. WASHING ION. D. Y7

G. G. BAKER.

BOILER TUBE TOOL.

APPLICATION FILED APR. 3. 1014.

1, 1 1 6,205. Patented Nov. 3, 1914.

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CHARLES GEORGE BAKER, OF ATCHISON, KANSAS.

BOILER-TUBE TOOL.

Specification of Letters Patent.

Patented Nov. 3, 1914..

Application filed April 3, 1914. Serial N 0. 829,405.

To all whom it may concern Be it known that I, CHARLES Gnonon BAKER, acitizen of the United States, residing at Atchison, in the county ofAtchison and State of Kansas, have invented certain new and usefulImprovements in Boiler-Tube Tools; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enableothers skilled in the art towhich it appertains to make anduse the same.

This invention comprehends certain new and useful improvements in boilertube tools, and has for its primary object to provide a device of thischaracter which will be of such construction and operation as to expandthe flue and form a shoulder around the same inwardly of the headpiecethrough Which the end of the tube extends and at the same time form abead upon the outer end of said tube.

Another object is to provide a device of this character in which theparts will be of extremely simple and cheap construction and formed andassembled in such a manner that they may be readily replaced should anysuch parts become worn or broken.

A still further object of this invention is to construct the device insuch a manner that the tube may be expanded, the beads formed upon theouter end thereof, and the shoulder forced outwardly within the boiler,with one operation.

A still further object is to generally improve and simplify theconstruction and operation of devices of this character and to provide atool which may be readily adjusted to fines or tubes of variousdiameters, thereby making it unnecessary to provide a separate tool foreach size tube or flue.

lVith these and other objects in view as will become more apparent asthe description proceeds, the invention consists in certain novelfeatures of construction, combination and arrangement of parts as willbe hereinafter more fully described and claimed.

For a complete understanding of my in vention, reference is to be had tothe following description and accompanying drawings, in which-- Figure 1is an elevational view of my improved tool, Fig. 2 is a view similar toFig. 1, with the plunger in the outermost position, Fig. 3 is alongitudinal sectional view through the device, on the. plane of line3-4? of Fig. 1, Fig. 4 is a plan view of Fig. 3 with the short bodysection removed, Fig. 5 is a detail elevational view of the plunger,Fig. 6 is a detail elevational view of one of the spreading members,Fig. 7 is a view similar to Fig. 6 and at right angles thereto, Fig. 8is a detail elevational view of one of the heading members, and Fig. 9is a fragmentary detail sectional view taken on the plane of line 99 ofFig. 2.

Referring in detail to the drawings by numerals, 1 designates in generalthe body of the tool which is formed in-two sections numbered 2 and 3,said sections being secured together by a screw 1 or other suitablemeans extending through the smaller section 3 and into the largersection 2. Each section of the body is of substantially semicircularform in cross section and the section 3 is placed with its flat sideagainst the fiat side of the section 2, thereby providing a body ofcircular form in cross section. I have shown the section 2 as beingsolid with the forward end and the section 3 as being shorter than thesection 2 and having its forward end engaged with the flat wall of theforward end of section 2, as will be readily understood by referring tothe drawings. The inner end of the body 1 is enlarged by forming a wideflange 5 around the same, half of the flange being carried by each ofthe sections 2 and 3, and said body 1 is provided with a central socket6 extending inwardly from the inner end thereof, the inner end of thesocket being enlarged, as shown at 7, and communicating with theoppositely directed guide slots 8 which open upon opposite sides of thebody 1, said guide slots 8 being positioned so that half of each guideslot is formed in each of the sections 2 and 8, thereby making itpossible to readily place in position or remove the spreader mombore 9.

The inner walls of the guide slots 8 are curved, as shown at 10, tocorrespond with the inner convex edges of the spreader members 9,thereby properlyguiding the spreader members 9 and forcing the outerworking ends 12 thereof outwardly in opposite directions, as the reducedend 13 of the plunger 14 is forced against the inner ends of saidspreader members 9 by means of an air ham- Iner or the like engagedagainst the outer end of said plunger 14 to force the same in-.

wardly through the socket 6. Outward movement of the spreader members 9is limited by engagement of the beveled forward ends of the stopshoulders 15, formed upon the upper and lower faces of said spreadermembers 9, with the stop walls 16 formed adjacent the outer ends of theguide openings 8 by decreasing the size of said openings at their outerends the enlarged inner end 7 of the socket 6 being adapted toaccommodate both the inner ends of the spreader members 9 and the stopshoulders 7 formed upon the upper and lower faces thereof. It will alsobe understood that the spreader members 9 are preferably tapered towardtheir outer ends and curved intermediate their ends, as clearly shown inFigs. 1, 6 and 7 of the drawings. i

It will be understood that when the smaller portion of the body 1 isinserted in the end of a flue or tube to be expanded and headed and tohave a shoulder formed adjacent its end and inwardly of the boiler sheetthrough which the tube is engaged by forcing a portion of said tube orflue outwardly, the spreader members 9 are in their innermost position,the outer working ends 12 thereof being flush with the smaller portionof the body 1, and the plunger 14c being in the position shown in Fig.2. It will also be understood that the bead forming members 17, securedin the forward portion of the bead or flange 5 of the body 1, areproperly adjusted, according to the diameter of the fine or tube, andwhen said tool is placed in position, the end of the tube or flue restsupon the inclined faces 18 of said beading members 17, and as theplunger 14: is driven inwardly to force outwardly the spreader members 9and cause said spreader members to form the desired shoulder inwardly ofthe boiler sheet or wall through which the end of the tube or flueextends, by forcing a por tion of said tube or flue outwardly, the body1 of the tube will be forced to move inwardly, thereby forcing thebeading members 17 against the end of the flue or tube and causing saidend of the flue or tube to turn outwardly and thereby form the bead,outwardly of the sheet or other member through which said tube or flueis engaged, owing to the concave recesses 19 at the upper ends of theinclined faces 18 of said beading members 17. The edge of the bead willbe bent backand pressed against the outer face of the sheet or othermember through which the end of the tube or flue extends, by means ofthe molding point 20 projecting forwardly from the body of the beadingmember 17, at the outer edge of the recesses 19, it being understoodthat the tool is rotated during the operation of expanding the tube,forming the bead at the outer end thereof and forcing outwardly theshoulder inwardly of the member through which said tube projects.

It will be understood that the bead forming members 17 extend radiallyfrom the body 1 and may be moved toward the center thereof or away fromthe center of the said body 1 and secured in adjusted position by meansof the thumb nut 21, mounted upon the screw 22 extending through the ear23 and through the elongated opening 24 in each beading member 17, saidscrew 22 having a head 25 formed upon one end and a nut 26 inwardly ofsaid head 25 and engaged against one side of the beading member 17through which the screw 22 extends, whereby the beading member 17 willbe clamped against one wall of the ear 23 when the thumb nut 21 istightened upon the screw 22 or threaded against the opposite wall ofsaid ear 23. It will be understood that the ear 23 is formed byproviding a recess 27 in the forward edge of the flange 5 of the body 1for each beading member 17 and by providing a space to the opposite sideof said ear to accommodate the thumb nut 21. The tool may be readilyheld in proper position and rotated in either direction during use, bymeans of a handle 28 projecting laterally from the body 1, as will bereadily apparent.

From the foregoing it will be clearly apparent that I have provided atool which will be of extremely simple construction and operation andhighly efficient in use, and which is formed in such a manner that theparts may be readily assembled, and should any of such parts become wornor broken, they may be readily replaced at a small cost.

l/Vhile I have shown and described the preferred embodiment of myinvention, it will be understood that minor changes in construction,combination and arrangement of parts may be made without departing fromthe spirit and scope of the invention as claimed.

Having thus described my invention, 1 claim:

1. A device of the character described comprising a body, said bodyhaving an enlarged end, said enlarged end having a socket terminating inan enlarged inner end, said body having guide slots communicating attheir inner ends with the enlarged inner ends of the socket, spreadermembers slidably engaged in said guide slots, means for limiting outwardmovement of said spreader members, a plunger having its inner endengaged with the spreader members to force the latter outwardly, andbeading members carried by said enlarged end of the body.

2. A device of the character described comprising a body, said bodybeing formed.

in sections, said body having a socket extending inwardly from one end,a portion of said socket being formed in each member forming the body,said body having guide openings for said spreader members, each guideopening being formed in part in each of the members forming the body,the outer ends of the guide openings being reduced to form stop walls,each of said openings having a curved inner wall, curved spreadermembers positioned in said guide openings, each spreader member having acurved wall for engagement with the curved Wall of the guideopeningwithin which said spreader member is engaged, each spreadermember being provided with a stop shoulder for engagement with the stopwall of the opening for said spreader member, and a plunger within saidsocket for engagement with the inner ends of the spreader members toforce the latter outwardly.

3. A device of the character described comprising a body having anenlarged end,

concave recesses, means for securing said beading members in adjustedposition, and spreading means carried by sald body.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES GEORGE BAKER. Witnesses:

E. H. YOUNG, MINDA A. MCCLINTOCK.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

